These products offer a convenient way to operate 12 VDC equipment such as professional communications and navigation equipment from the 24 VDC electrical systems found on diesel engine vessels.
There are 12 products in the range from 3A to 50A in common earth configurations with the environmental protection class IP53 or IP65. They have been optimized for high volume 24 VDC to 12 VDC applications such as on commercial and leisure marine ships.
All units consume an off load current of less than 15mA, which is probably less than the self discharge current of the ships battery. In most cases this can be ignored, speeding the installation by removing the need to fit a remote switch.
All products fit onto a “Click ‘n’ Fit” mounting clip which is fixed in three points allowing it to be mounted on uneven surfaces. It is easy to fit the clip into awkward places and then simply click the unit into position.
A green LED indicates when there is output from the converter. This gives reassurance to the installation engineer and speeds fault finding.
| Input voltage range | 12 VDC, 24 VDC or 48 VDC +/- 30% |
| Output voltage | 13,6 VDC or 27,2 VDC +15% -20% at extremes of temperature, load, input tolerance etc |
| Intermittent output power | Continuous rating +25% taken for a maximum of 2 minutes followed by 8 minutes rest |
| Transient voltage protection | Meets ISO7637-2 International standard for 24 VDC commercial vehicles |
| Electrostatic voltage protection | Meets ISO10605, ISO14982, >8 kV contact, 15 kV discharge |
| Output noise | <50 mV pk-pk (100 mV on 24 VDC units) at continuous load. Meets CISPR25. |
| Off load current (quiescent current) | <15 mA |
| Power conversion efficiency | Typically: 90% for non-isolated units, 85% for isolated units |
| Isolation | >400 Vrms between input, output and case, on isolated products only |
| Mean time between failures | >162 years (HRD4) |
| Operating temperature | -25 °C to +30 °C to meet this specification table |
| +30 °C to +80 °C de rate linearly to 0 A | |
| Storage temperature | -25 °C to +100 °C |
| Operating humidity | 95% max., non-condensing |
| Casework | Anodized aluminum, glass filled polycarbonate, dust water and impact resistance to IP533 (excludes |
| DDi 24-24 240 which is ventilated and fitted with a cooling fan to IP20). | |
| Connections | Four 6.3mm push-on flat blade connectors |
| Output indicator | Green LED adjacent to output terminals |
| Mounting method | Click ‘n’ fit mounting clip, fitted separately using three hole fixture |
| Safe area protection: | |
| Over current | Limited by current sensing circuit |
| Over heat | Limited by temperature sensing circuit |
| Transients | Protected by filters and rugged component selection |
| Catastrophic protection | Protected by internal input and output fuses |
| Approvals | 2004/108/EC The general EMC directive |
| 2009/19/EC The automotive directive | |
| 93/68/EEC The CE marking directive | |
| Designed to | EN50498, ISO 7637-2. |
| Markings | CE and E (e) marked |
There are no reviews written yet about this product..
Here you see comparable items purchased by other customers.
